As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON REACHING CRUISING ALTITUDE OF 18,000 FT. ATTEMPTED TO ADJUST THE RUDDER TRIM AND NOTICED IT WAS STIFF BUT OPERATIONAL. ON THE GROUND TRIM OPERATED NORMAL. MAINTENANCE COMPLIED WITH RUDDER TRIM NTO 940-2016-01658. NO DEFECTS NOTED. OPERATIONAL CHECK FLIGHT PENDING.